I noticed this broom last winter. It is by the side of the freeway. At first, I thought it was in a hawthorne. Upon closer inspection, however, I found that it was in a plum tree. The broom seems to be sterile- there were no flowers in it. A non-blooming plum tree seems pretty worthless as an ornamental, but I think I will try propagating it anyway. I will likely graft it high on the rootstock, so that it will look like a giant lollipop.
